/Engine/Source/Runtime/Core/Public/ProfilingDebugging/ScopedTimers.h
Same asFScopedDurationTimer, except that it tracks the time value internally so you don't have to pass in a double to accumulate. CallGetTime()to get the total time since starting.
class FAutoScopedDurationTimer : public [FScopedDurationTimer](API\Runtime\Core\ProfilingDebugging\FScopedDurationTimer)